EP 0651252 A2 19950503 - Holographic based bio-assay.
Title (en)
Holographic based bio-assay.
Title (de)
Holographisches Biotestverfahren.
Title (fr)
Bioanalyse holographique.
Publication
Application
Priority
US 14491993 A 19931028
Abstract (en)
Appts. for detecting target reactant utilises a second reactant immobilised at selected locations on a support structure (212) in correspondence to a predetermined pattern, the immobilised reactant binding the target reactant when the two are brought into contact. A coherent light source (216) is used to illuminate the support structure and the predetermined pattern causes a holographic image to be generated when the reactants are bound. This image can be detected by detection means (215). Also claimed is a method for detecting the target reactant using the appts. PREFERRED - One of the target and immobilised reactants is an antibody or antigen, a nucleic acid, an enzyme, a protein, or a polypeptide. The support structure is well (210) having the immobilised reactant bound to its bottom surface or a layer of porous material thicker than the wavelength of the coherent light, the immobilised reactant being dispersed throughout the layer. The predetermined pattern compensates for any distorting interfaces (220) between support structure and coherent light source. The holographic image is an image of a small bright object.
IPC 1-7
IPC 8 full level
G01N 21/78 (2006.01); C12M 1/34 (2006.01); C12Q 1/68 (2018.01); G01N 21/47 (2006.01); G01N 33/53 (2006.01); G02B 5/32 (2006.01)
CPC (source: EP US)
C12Q 1/68 (2013.01 - EP US); G01N 21/4788 (2013.01 - EP US); G01N 33/53 (2013.01 - EP US); G03H 1/0005 (2013.01 - EP US); G03H 1/0244 (2013.01 - EP US); G03H 1/0486 (2013.01 - EP US); G03H 2001/0033 (2013.01 - EP US); G03H 2001/0292 (2013.01 - EP US); G03H 2001/0413 (2013.01 - EP US); G03H 2001/2244 (2013.01 - EP US); G03H 2001/226 (2013.01 - EP US); Y10S 435/808 (2013.01 - EP US); Y10S 436/805 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
US 5352582 A 19941004; EP 0651252 A2 19950503; EP 0651252 A3 19960320; JP H07190938 A 19950728
DOCDB simple family (application)
US 14491993 A 19931028; EP 94302442 A 19940408; JP 28889894 A 19941028